After confirming the true existence of the Stone Table, Sean was no longer interested in these two levels of underground space.
He didn't know if the original Viscount of the Dabion Kingdom still had descendants, nor did he know if anyone else in his family knew the function of this sacrificial platform. But Sean knew that during the war with Cecilia, no demons appeared in the Viscount's army. So there are only two explanations for this. The first is that he did not know the function of the sacrificial platform, and the second point is that This Viscount, who could be compared to Asina simply in terms of poverty, had no suitable sacrifice.
After leaving this underground space, Sean arranged the position of the candlestick - this candlestick requires a certain degree of strength and agility to open, and it is not something that someone can open by just pulling hard.